121211022012 has 48 divisors (see below), whose sum is σ = 283246656000. Its totient is φ = 40343595840.

The previous prime is 121211021983. The next prime is 121211022043. The reversal of 121211022012 is 210220112121.

It is a super-2 number, since 2×121211022012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121211021982 and 121211022000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34228962 + ... + 34232502.

It is an arithmetic number, because the mean of its divisors is an integer number (5900972000).

Almost surely, 2^121211022012 is an apocalyptic number.

121211022012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121211022012 is an abundant number, since it is smaller than the sum of its proper divisors (162035633988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121211022012 is a wasteful number, since it uses less digits than its factorization.

121211022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6986 (or 6984 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121211022012 its reverse (210220112121), we get a palindrome (331431134133).

The spelling of 121211022012 in words is "one hundred twenty-one billion, two hundred eleven million, twenty-two thousand, twelve".